import { InjectionToken, OnDestroy } from '@angular/core';
import { ActivatedRoute, Router } from '@angular/router';
import { StorageService, ThemeRegistryService, ThemeStyleManagerService, ThemeTrackingService } from './internal';
import * as i0 from "@angular/core";
/**
 * @group InjectionToken
 */
export declare const STORAGE_KEY: InjectionToken<string>;
/**
 * @group InjectionToken
 */
export declare const QUERY_PARAM: InjectionToken<string>;
/**
 * Service for managing and switching between different themes in an application.
 *
 * @group Services
 * @group Public API
 */
export declare class ThemeService implements OnDestroy {
    #private;
    private readonly registry;
    private readonly tracker;
    private readonly manager;
    private readonly storage;
    private readonly activatedRoute;
    private readonly router;
    private readonly storageKey?;
    private readonly queryParam?;
    /**
     * Observable stream that emits the currently active theme.
     */
    readonly themes$: import("rxjs").Observable<import("@rb-mwindh/ngx-theme-manager").Theme[]>;
    /**
     * Observable stream of all registered themes.
     */
    readonly currentTheme$: import("rxjs").Observable<string | null>;
    /**
     * Creates a new instance
     *
     * @param {ThemeRegistryService} registry - Service for registering available themes
     * @param {ThemeTrackingService} tracker - Service for tracking the currently selected theme
     * @param {ThemeStyleManagerService} manager - Service for theme discovery, activation and deactivation
     * @param {StorageService} storage - Service for storing the currently selected theme in the browser storage
     * @param {ActivatedRoute} activatedRoute - Angular service for managing the current route
     * @param {Router} router - Angular service for navigating between routes
     * @param {string} storageKey - Key for storing the currently selected theme in browser storage
     * @param {string} queryParam - Query parameter name for specifying the theme in the route
     */
    constructor(registry: ThemeRegistryService, tracker: ThemeTrackingService, manager: ThemeStyleManagerService, storage: StorageService, activatedRoute: ActivatedRoute, router: Router, storageKey?: string | undefined, queryParam?: string | undefined);
    /**
     * Cleanup logic to be executed when the service is destroyed.
     *
     * @internal
     */
    ngOnDestroy(): void;
    /**
     * Select the theme to be used
     *
     * @param {string} theme
     */
    selectTheme(theme: string): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<ThemeService, [null, null, null, null, null, null, { optional: true; }, { optional: true; }]>;
    static ɵprov: i0.ɵɵInjectableDeclaration<ThemeService>;
}